진주산업대학교의 樹木相과 管理에 관한 소고

김우룡,안현철,조현서,추갑철,송재철 진주산업대학교 농업기술연구소 2001 農業技術硏究所報 Vol.14 No.-

This study was carried out to investigate the woody plants of the Chinju National University. Field survey was carried out 3 times from July to October 2000. The results obtained from this study were as follows : 1. Among 145 kinds, 88 genera, 53 families of total woody plants, the needle-leaved trees of 28 kinds, 15 genera, 6 families and broad-leaved trees of 117 kinds, 73 genera 47 families were found. 2. Among the 4 investigated districts, area II showed the most abundant woody plants(92 kinds). 3. The endemic woody plants to Korea in Chinju National University were 6 species, They are Pinus koraiensis, Abies koreana, Buxus microphylla var. koreana, Cornus walteri, Carpinus coreana, Gleditsia joponica var. koraiensis. 4. The species of rare and endangered plants were 6 species, There are Corylopsis coreana, Juniperus chinensis var. sargentii, Koelreuteria paniculata, Abies koreana, Magnolia kobus, Tsuga siebodii and The exotic woody plants in korea were 59 kinds 41 genera 28 families. 5. The most abundant populations were Thea sinensis(271 populations) and Ilex crenata(247 populations).

3T Multi Voxel Spectroscopy에서 SENSE와 NEX 변화에 따른 정상인 뇌 대사물질 변화 분석

성열훈,임재동,이재현,조성봉,우동철,최보영,Seong, Yeol-Hun,Rhim, Jae-Dong,Lee, Jae-Hyun,Cho, Sung-Bong,Woo, Dong-Chul,Choe, Bo-Young 한국의학물리학회 2008 의학물리 Vol.19 No.4

자기공명분광법(magnetic resonance spectroscopy: MRS)은 인체내 대사물질을 정량분석하여 병변의 조기진단 및 정밀진단에 도움을 주고 있으며, 최근 임상에 이용되고 있는 자기공명분광법은 single voxel spectroscopy (SVS) 기법과 multi voxel spectroscopy (MVS) 기법이 있다. 본 연구에서는 SENSE와 NEX를 변화시킨 multi voxel spectroscopy (MVS)의 데이터와 기존 single voxel spectroscopy (SVS)의 데이터를 비교 분석하여, 각각의 데이터의 유의성 차이를 평가하고자 하였다. 정상 성인 지원자 13명(남자: 5명, 여자: 8명, 평균 41세, 표준편차 11.65세)을 대상으로 chemical shift image (CSI)를 이용한 MVS검사를 시행하였다. 장비는 3.0T Achieva Release Version 2.1 (Philips Medical System, Netherland)을 이용하였고, 8 channel head coil을 사용하여 brain thalamus 부위에서 CSI spectrum을 1 slice 획득하였다. Scan parameter로는 FOV (field of view): $230{\times}184mm^2$, TR (time to repetition): 2000 msec, TE (time to echo): 288 msec, matrix: $15{\times}12$, VOI(view of interest): $110{\times}110mm^2$, voxel size: $15{\times}15{\times}15mm^3$로 하였다. SENSE factor (S)와 NEX (N)는 S1*N1, S2*N1, S2*N2, S3*N2로 변화하여 스펙트럼을 획득하였고, 각 scan time은 5분 54초, 3분 32초, 6분 20초, 4분 20초였다. 얻은 모든 MRS 데이터는 jMRUI 3.0 Version 프로그램에서 분석하였고, SENSE factor와 NEX를 변화시켜 얻은 MVS data 그룹들이 정상 성인 뇌 대사물질의 변화에 영향을 주는지 검증하기 위해 그룹 간에 ANOVA분석을 실행하여 P 값이 0.05보다 크게 나오면 그룹들 사이에 유의한 차이가 없다고 분석하였다. NAA/Cr과 Cho/Cr의 상대적 비율은 MV와 SVS사이에서는 유의한 차이가 없었다. 즉, SENSE factor와 NEX를 변화시켜 얻은 MVS data에서 정상 성인 뇌조직의 대사물질의 변화를 관찰한 결과, S1*N1의 NAA/Cr은 $1.45{\pm}0.03$, Cho/Cr은 $0.88{\pm}0.03$이고, S2*N1의 NAA/Cr은 $1.44{\pm}0.03$, Cho/Cr은 $0.87{\pm}0.05$, S2*N2의 NAA/Cr은 $1.43{\pm}0.02$, Cho/Cr은 $0.87{\pm}0.04$이며, S3*N2의 NAA/Cr은 $1.45{\pm}0.03$, Cho/Cr은 $0.87{\pm}0.03$으로 나타났다(F-value : 1.37, D.F : 3, P-value : 0.262). 그러나 데이터의 질을 측정하기 위한 MVS 데이터의 NAA Peak line-width는 SVS 데이터의 NAA Peak line-width 보다 약 3배 정도 넓었다. 본 연구에서는 MVS에서 SENSE factor와 NEX 값을 다양하게 변화시킨 MVS의 데이터와 SVS의 데이터가 큰 차이가 없음을 확인하였다. 즉, 어는 특정 부위의 뇌 조직의 대사물질은 MVS와 SVS 기법 모두 큰 차이가 없음을 확인할 수 있었다. 그러므로 MVS는 SVS보다 광범한 부위를 짧은 시간 안에 검사할 수 있으므로 매우 유용한 방법이라고 사료된다. To evaluate the metabolic changes in normal adult brains due to alterations SENSE and NEX (number of excitation) by multi voxel MR Spectroscopy at 3.0 Tesla. The study group was composed of normal volunteers (5 men and 8 women) with a mean ($\pm$ standard deviation) age of 41 (${\pm}11.65$). Their ages ranged from 28 to 61 years. MR Spectroscopy was performed with a 3.0T Achieva Release Version 2.0 (Philips Medical System-Netherlands). The 8 channel head coil was employed for MRS acquisition. The 13 volunteers underwent multi voxel spectroscopy (MVS) and single voxel spectroscopy (SVS) on the thalamus area with normally gray matter. Spectral parameters were as follows: 15 mm of thickness; 230 mm of FOV (field of view); 2000 msecs of repetition time (TR); 288 msecs of echo time (TE); $110{\times}110$ mm of VOI (view of interest); $15{\times}15{\times}15$ mm of voxel size. Multi voxel spectral parameters were made using specially in alteration of SENSE factor (1~3) and 1~2 of NEX. All MRS data were processed by the jMRUI 3.0 Version. There was no significant difference in NAA/Cr and Cho/Cr ratio between MVS and SVS likewise the previous results by Ross and coworkers in 1994. In addition, despite the alterations of SENSE factor and NEX in MVS, the metabolite ratios were not changed (F-value : 1.37, D.F : 3, P-value : 0.262). However, line-width of NAA peak in MVS was 3 times bigger than that in SVS. In the present study, we demonstrated that the alterations of SENSE factor and NEX were not critically affective to the result of metabolic ratios in the normal brain tissue.

잠김 금속판을 이용한 대퇴골 전자하 골절의 치료 : 압박 고 나사와 비교

손현철, 김용민, 김동수, 최의성, 박경진, 조병기, 박지강, 배승환 충북대학교 의과대학 충북대학교 의학연구소 2011 忠北醫大學術誌 Vol.21 No.2

-본문참고-

What SERVPERF in Recruiting Website Does Determine Users` Perceived Value, Satisfaction, and Revisit Intention in Korea?

( Chul-ho Cho1 ),( Jae Hoon Hyun ) 한국품질경영학회 2015 한국품질경영학회 학술대회 Vol.2015 No.2

Purpose This study aims to identify the factors of the recruiting websites’ service quality that determines the users’ perception and behavior and the moderating role of job exploration type in Korea. Design/Methodology/Approach This research is designed to address the casual relation between service quality of recruiting websites and revisit intention by introducing perceived value and user satisfaction as mediating variables. Based on pilot tests and previous studies of website quality, we devised a SERVPERF evaluation model pertaining to the web service quality of recruiting website. 302 valid observations were collected and used to examine the constructs through structural equation modeling. Findings The findings show that interactivity, aesthetics, reliability and usability influence service quality of recruiting websites through perceived value and satisfaction as mediators. This study also found that job exploration type moderates, as a user group seeking full time jobs recognizes value from the quality of information and scope of interactivity, while users searching for part time jobs appreciate aesthetics. Implications This research contributes to the literature by the provision of the elements that influence service quality of recruiting websites and by examining perceived value as a new mediator. The findings also provide practical implications for recruiting websites to tune strategic approach by different motives of user groups. Originality/Value A number of previous studies examined web service quality and users’ reaction in the area of e-commerce and general websites but there were lack of attempts to identify service quality in the context of online recruitment. This study fills the research gaps by providing the SERVPERF evaluation model examining the elements that influence quality of recruiting website and identifying how service quality affects users’ perception and behaviour.

임피던스와 수중체중 측정법을 이용한 체지방의 평가 및 잔기량 측정방법의 타당성에 관한 연구

조현철,정찬수 龍仁大學校 體育科學硏究所 2001 體育科學硏究論叢 Vol.11 No.1

The purpose of this study is to examine the between difference of body fat produtction methods and residual volume measurement method in 20 adult men. Subjects were conducted to body fat produtction through underwater weighing method and impedance method, and residual volume measurement through vital capacity, spirometer, pure oxygen re-respiratory method(land and underwater) for analysis of validity The results of this study were as follows; 1. It was significant difference between difference of body fat produtction methods and residual volume measurement method. and correlation coefficint was .833. Therefore it was suggested that regression equation was UW=1.033inbody-0.833 for body fat produtction. 2. It was showed that residual volume was highest in pure oxygen re-respiratory method in land and pure oxygen re-respiratory method underwater, vital capacity, spirometer in order. Considering the results, It was indicated to higher correlationship between densitometry method using the underwater weighing method and impedance method using bioelectricity but significantly difference in body fat measurement. Therefore, it shoud be concider in measurement, also residual volume measurement through vital capacity, spirometer.

Step test시 승강대 높이에 따른 타당도 연구

조현철,신승윤 龍仁大學校 體育科學硏究所 1998 體育科學硏究論叢 Vol.8 No.1

The purpose of this study was to verify validity of height of step test that is selected for estimation of endurance in college entrance examination. A total of 24 college male student subjects were performed two different bench heights(40cm, 50.8cm) in 30 stepping/min for 5minutes and measured heart rate during stepping and recovery and cadio-pulmonary endurance capacity using Bruce protocol. The results were obtained as follow : 1. It was showed generally lower correlation between heart rate and maximum oxygen consumption. 2. Both of 3minutes and 5minutes step test can be selected there higher correlations between recovery heart rate of in 40cm height and both of stepping time(3minutes and 5minutes). However, there were lower correlations between recovery heart rate of in 50cm height. 3. It was showed that 40cm step height was more effective then 50cm step height according to correlation between VO2max and step heights According to the results, it is considered that it is necessery to introduce new estimation method and the step height adjustment method for effective estimation of endurance capacity.

女子 Handball選手들의 體力管理에 關한 硏究

趙顯喆 龍仁大學校 1988 용인대학교 논문집 Vol.4 No.-

The purpose of this study is to examine management of physical fitness in female handball athletes.The body composition (density) and physical fitness (? O2max or submax, muscular strength and work intensity) and energy balance of 13 female athletes were measured by the year.The results were summarized as follows. 1.Weight and Body Composition ◎ A Group In weight, there was no significant difference between May and the respective months.But in Body Composition, the % Fat and Fat were very different (P<0.01, P<0.05, P<0.05) in June, September, October compared with May.LBM was not significantly in contrast with that of May. ◎ B Group In weight, there was a significant increase in January and March compared with May.The %Fat and Fat were significantly increased in January, February, March compared with May, but they were significantly decreased in June, August, and October.LBM was not significantly changed in contrast with November. 2.Physical Fitness ◎ A Group In Muscular Strength, Arm Extension was significantly increased in July, October compared with May.Leg Extension was significantly decreased right in October.The Muscular Strength showed no statistically significant difference.Power was significantly increased (P<0.05) in July, September, October compared with May.Reaction Time had no significant difference between each month and May. In effects of Endurance, PWC % HRmax was significantly increased (P<0.05) in September, October compared with May, and ? O2max was significantly increased(P<0.05) in October. ◎ B Group In Muscular Strength, Arm Extension was significantly decreased in April, July compared with November and Back Strength was significantly decreased((P<0.05) in July.In power, there was no significantly difference.Reaction Time showed no significant difference between each month and November. In Effect of Endurance, ? O2 was not significantly changed in each month compared with November. 3.Nutrition Intake and Energy Output ◎ A Group The standard Energy Intake a day was 1944.8±221.0kcal, and Energy Output was 2692.8±317.6kcal. ◎ B Group Energy Intake a day was 1788.7±362.6kcal in January and 1606.6±417.9kcal in Semtember.Thus there was no statistically significant difference.Energy Output was 1937.7±143.3kcal in January and 2458.1±283.4kcal in September.Therefore there was significant increase in September.In Energy Intake between the each nutrition elements there was no statistically significant difference. From the results above we conclude as follows. In management of Physical Fitness by the year, effects of Endurence was maintained or slightly developed but Muscular Strength was slightly decreased or maintained in A Group. Therefore it is necessary that regular weight training in the middle of practicing exercise for varying physical strength by technological exercise and gradual development was required, too In the B Group Muscular strength, effects of Endurance were especially decreesed in terms of detraining and increased after May by practicing Retraining. According to these results it is necessary that stortening of winter detraining and a continuous training for maintaining.physical strength was defended, too.In addition to this reinvestigation of training content for increase of competition competence and individual prescription and Energy Balance for A, B Group are required.

사다리꼴 핀에 대한 해석적 방법과 실험의 비교

조철현,한영민,강형석 江原大學校 産業技術硏究所 2005 産業技術硏究 Vol.25 No.A

A trapezoidal fin is analyzed by using one-dimensional analytic method. For two boundary conditions, the heat transfer rate is given instead of specified temperature at the fin base and heat conduction into the fin tip is equal to heat convection from the tip. Temperatures at three different points within the trapezoidal fin are measured by using experimental apparatus. A comparison of the temperature between one-dimensional analytic method and experimentation is made as a function of dimensionless fin length under both free convection and forced convection conditions. The ratio of heat loss from the fin tip surface to that through the fin base is presented as a function of dimensionless fin length and Biot number. One of results shows that the relative error increases as the air velocity increases for forced convection conditions.

Boxing 競技中의 Energy消費量과 運動强度에 關한 硏究

趙顯喆,宋淳天,鄭正眞 龍仁大學校 1989 용인대학교 논문집 Vol.5 No.-

The purpose of this study is to analyse energy cost by HR-VO2 regression equation and exercise intensity by %HRmax.during the boxing game.The subject were six elite boxing players and five ordinary boxing players. The results obtained from the above research can be summarized follows. 1.Mean energy cost of elite boxing players and ordinary boxing players during the boxing game were 13.54, 11.32㎉/min in 1round, 15.12, 12.86㎉/min in 2round and 15, 50,13.06㎉/min in 3round, respectively. 2.Total energy cost of elite boxing players and ordinary boxing players during the boxing game were 159.84㎉/11min and 136.40㎉/11min, respectively. 3.The exercise intensity of elite boxing players and ordinary boxing players during the boxing game was 93.1, 88.4 %HRmax.in 1round, 97.9, 95.6 %HRmax.in 2round and 97.9, 95.8%HRmax.in 3round, respectively. 4.To perform the boxing game effectively, players will have to elevate their cardio respiratory performance.

播種量 差異에 따른 濟州在來 동부의 生育反應, 收量 및 粗成分 變化

趙南棋,金東賢,宋昌吉,劉哲受,高東煥 濟州大學校 亞熱帶農業硏究所 1999 亞熱帶農業硏究 Vol.16 No.-

ABSTRACT This study was accomplished to look into the response of main growth characters, yield and chemical composition of Cheju local cowpea on Cheju Island based on the difference between seeding rate. The study took place between May and September, 1998. Number, of days to flowering tended to be delayed as the seeding rate increased. Plant length was the longest at 6kg/10a treatment and the next one was at 5kg/10a treatment. The shortest came from 2kg/10a treatment, 275 cm, 271 and 220cm respectively. Number of branchs and stem diameter became weaker as the seeding rate increased. Fresh forage yields per lOa was the heaviest which weighed 6,073kg at 6kg/10a treatment and 5,840kg at 5kg/10a treatment respectively. The rest decreased gradually. Dry matter yields per lOa, crude protein yields per lOa and total digestible nutrient yields per lOa showed a similar tendency to fresh yields per lOa. The percentage of crude protein and crude fat got higher as the seeding rate increased, but the percentage of crude ash and crude fiber rather tended to decrease. Nitrogen free extract and total digestible nutrient percentages were similar to the change of crude protein percentage. SPAD reading values were the highest at 6kg/10a and 5kg/10a treatment.